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    <title></title>
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    <style>
      table {
        border-collapse: collapse;
        text-align: center;
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      th,
      td {
        width: 100px;
        height: 35px;
        border: solid 1px #f00;
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      td[rowspan] {
        font-weight: 700;
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  <body>
    <table>
      <thead>
        <tr>
          <th colspan="6">课程表</th>
        </tr>
      </thead>
      <thead>
        <tr>
          <th></th>
          <th>星期一</th>
          <th>星期二</th>
          <th>星期三</th>
          <th>星期四</th>
          <th>星期五</th>
        </tr>
      </thead>
      <tbody>
        <tr>
          <td rowspan="4">上午</td>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td rowspan="4">下午</td>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td rowspan="2">晚自习</td>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
        <tr>
          <td>数学课</td>
          <td>英语课</td>
          <td>毛概</td>
          <td>c语言</td>
          <td>网页设计</td>
        </tr>
      </tbody>
    </table>
  </body>
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